Internal-combustion engine



Nov. 5, 19 9. c. M. CLEMENTSON ETAL 1,734,076 I INTERNAL COMBUSTIONENGINE Filed Aug. 24, 1927 A tor-rev Patented Nov. 5,1929 p i Q staresear-ear l nes CARL MARTIN CLEMENTSON AND SVEN OLA HEINRICH CLEMENTSON, FMATJMO,

SWEDEN 4 INTEBNALGOMBUSTION ENGINE Application filed August 24, 1927,Serial No. 215,202,'and in Sweden September 23, 1924.

(Eur invention relates to internal combuswall into two com artments ofwhich the I a L w 0 7 u tion engines and more particularly to animcompartment 11 on the one'sid'e of said wall proved valve structurefor such engines. is intended for the fuel admission and the The objectof the invention is to provide a other compartment 12 on the other sideof the rotar Y valve structure des1 'ned for cont1nwall for the exhaust.f 5 2: 5O

uous rotation during the run of the engine to Rotation is imparted tothe valve sleeve 4 which the said structure is applied and to by'meansofa gear13 affixed to a central stud operate with a very low speed ofrotation and on one end wall of said. sleeve, which wall with theexpenditure of a minimum amount closes the outer end of the compartment11,

]Q of power; such structure being formed with said stud extendingoutside of the wall 3 of 55 large ports for the admission of the fuelmixthe cylinder head as shown in Fig. 1. The ture and for the exhaust.gear 13 is intended to be in Inesh with a. worm Further objects andadvantages of the indriven from the main shaft of the engine (notvention will be explained in the course of the shown). i V

15 following detailed description; reference be- 14 represents athreaded boss for affixing 60 ing made to the accompanying drawing in asuitable pipe leading to the carbureter, and which Fig. 1 is a verticalsection through the 1.5 represents a similar boss in communicaupper partof an engine cylinder, equipped tion with the compartment 12 andintended with the valve structure according to the infor connection ofan exhaust pipe. The cas vention, along the axis of rotation of thelating 1 encloses a water spacef16 around the 65 ter, while Fig. 2 is across section along the cylinder 17, the piston of which is indicatedbroken section line m-00 yy in Fig. 1. by thenumerallS. V I

In the drawing, numeral 1 indicates the *The'operation of the valvestructure is as casing of the engine, which casing may confollows: Y

tain either a single cylinder or a plurality of WVhen therotary valvesleeve 4 rotates, the integral cylinders, and 2 indicates the cylininletports 5 in thesame are brought into regder head. The latter comprises aninner wall ister with the inlet'ports 8 in the hollow core 3 surroundedby a cooling water jacket 16 member 7, and'sincethe ports 19 in thewalli} which constitutes a continuation of the main of the cylinderlheadare arranged in alignwater jacket hereinafter referred to; and ment withthe ports 5 the fuel mixture may 75 said wall is provided with ports 19forming freely pass from carbureter and the boss. fuel admissionopenings to the cylinder, and 14 into the cylinder 17 at the fueladmission with a hollow rotary valve body in the form stroke. When theexhaust ports 6 at the other of a sleeve 4, which is provided with atleast side of the wall 10 in therotary valve sleeve 4 four pairs ofdiametrically opposite inlet in the same manner are brought intoregister so ports 5, and with at least four pairs of diawith the exhaustports 9 of the hollow core metrically opposite exhaust ports 6 thelatmember 7, it will also be apparent that a'comter ports being axiallydisplaced in relation municationwill be established between the to theinlet ports. l/Vithin the sleeve 4 is arcylinder 1'? and the exhaustpipe during the 40 ranged a non-rotating core member 7, which exhauststroke. 'Since there are not losses is hollow and provided with ports 8and 9 than four ports on'each side, and since these equal in number withand of a similar arports are equally spaced on the circumfer' rangementto the inlet ports 5 and the exence of the valvestructure, it isobviousthat haust ports 6 respectively. The said core the valve sleevemay rotate with a very low member 7 is divided b means of a artition see'd or in the case shown a s eed amountin '90 I having a largenumber'of port-openings at to only one-eighth that of the crank shaft,and it will be obvious that the driving means connecting the gear 13with the crank shaft must be constructed so that the opening and closingof the inlet and exhaust ports are correctly timed in relation to theposition of the pistons in their cylinders.

It will be obvious that the valve structure according to the inventionwill provide for a plurality of large and free passages both foradmitting the fuel charge and for expelling the exhaust gases, and thetightening between the open and the closed position is very effective.

whilethe other is in communication at its outer end with the exhaustpipe, and means disposed. laterally with relation to the cylinder headfor introducing fuel thereinto; said core member and said seat eachhaving a large number of ports therein arranged in alignment, and saidsleeve having the same number of ports so arrangedas to be brought intoregister with the first-mentioned ports a'large number of times duringeach rotation ofthe sleeve, the various ports being divided 'into twogroups arranged one at each side of the partition wall each serieseonjointly forming a single port of large total area.

7 2. In an internal combustion engine, a valve structure comprising,incombination, a cylinder head provided with a cylindrical seat, a

register simultaneously with the corresponding first-named set a numberof times during each rotation of the sleeve, whereby rotation of saidsleeve through a small angle will effect a substantially-instantaneousopening or closing of a ort unit.

3. An lnternal combustion engine, according to claim 2, in which theopenings of the several sets of openings are arranged indiametrically-opposite pairs.

In testimony whereof we have aflixed our signatures.

SVEN OLA HEINRICH CLEMENTSON.

CARL MARTIN CLEMENTSON.

valve sleeve rotatably mounted in said seat, i

a hollow stationary core member secured to the cylinder head and,fittinglcomformably within said sleeve, a'partition wall within thecore memberdividing the same into two compartments, one of which is incommunication with the exhaust pipe, and means for introducing, fuelinto the cylinder head; said core member and said seat each having alarge number of port openings therein ateach side ofthe partition Wall,each such number orset' of openings conj ointly forminga single port oflarge total area, the corresponding openings in the core member and seataligning with each other; and said sleeve also each side of thepartition wall,=each number v or set of sleeve openings likewiseconjointly forming a single port of large total area and adapted to bebrought periodically into

